Los Panchos + Maria Marta Serra Lima
type: MusicGroup
genre: bolero
popularity: 25
followers: 7188
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3059ec205472cb49358cf1ec3b03b716b6fb88f76879e2b871c212a718d7b553
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2f6211f-cd66-46f5-b8db-dcfa2f9d3023.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2f6211f-cd66-46f5-b8db-dcfa2f9d3023.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c2f6211f-cd66-46f5-b8db-dcfa2f9d3023
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3059ec205472cb49358cf1ec3b03b716b6fb88f76879e2b871c212a718d7b553","name":"Los Panchos + Maria Marta Serra Lima","registered_at":"2026-06-12T09:10:52Z","symbol":"NIM0252133","token_address":"0xd8864a788e047a0a7e296e3bced12c3fb55e2d9b","type":"artist","uuid":"c2f6211f-cd66-46f5-b8db-dcfa2f9d3023"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3059ec205472cb49358cf1ec3b03b716b6fb88f76879e2b871c212a718d7b553. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2f6211f-cd66-46f5-b8db-dcfa2f9d3023.json and https://artists.proofprofile.net/proofs/artist/c2f6211f-cd66-46f5-b8db-dcfa2f9d3023.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x3059ec205472cb49358cf1ec3b03b716b6fb88f76879e2b871c212a718d7b553","name":"Los Panchos + Maria Marta Serra Lima","registered_at":"2026-06-12T09:10:52Z","symbol":"NIM0252133","token_address":"0xd8864a788e047a0a7e296e3bced12c3fb55e2d9b","type":"artist","uuid":"c2f6211f-cd66-46f5-b8db-dcfa2f9d3023"}
album: Esencia Romantica
  type: MusicAlbum
  date published: 2008
  track: Verdad Amarga
    type: MusicRecording
    duration: PT2M50S
    duration ms: 170425
    explicit: false
    by artist: Los Panchos + Maria Marta Serra Lima
    in album: Esencia Romantica
      type: MusicAlbum
      date published: 2008
    genre: bolero
    isrc code: USESK0608310
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958079
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958079
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USESK0608310
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T00:21:05Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21124a0c0f8a82355ddf60b681276325d97d7380a7de7b5838e3e3b556f23636. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USESK0608310.
      date published: 2026-07-15T00:21:05Z
    audio: Verdad Amarga
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.584
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.685
      additional property: Energy
        type: PropertyValue
        value: 0.347
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.579
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.162
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.738
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.425
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor